Find the zero-point energy, that is, E = h 2 K 2 /2m, at k = 0,
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Find the zero-point energy, that is, E = h̄2K2/2m, at k = 0, using (1.2.6) in the limit b → 0 and U0 → ∞ and U0b finite but small. To do this, use the approximations for sinKa ≃ Ka and cos Ka ≃ 1 − 1/2 (Ka)2, assuming Ka is very small at k = 0.
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k²b 2K sin(Ka) + cos(Ka) = cos (ka). (1.2.6)
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At k 0 Eq 126 reduces to kb 2K and with the approximation sin Ka simplified to ...View the full answer
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